Measurements:
°C
°F
CURRENT WEATHER
10:33
Sanibel Island
88°F
NW 11 mph
Feels like: 96°F
Precip: 6%
World Resorts USA Sanibel Island Weather

7 Day Weather Forecast

09.15
tue
DAY
92°F
NW 7 mph
precip
6%
NIGHT
86°F
W 14 mph
precip
8%
09.16
wed
DAY
92°F
SW 13 mph
precip
9%
NIGHT
84°F
SW 17 mph
precip
9%
09.17
thu
DAY
90°F
SW 14 mph
precip
5%
NIGHT
84°F
SW 15 mph
precip
8%
09.18
fri
DAY
90°F
W 9 mph
precip
3%
NIGHT
82°F
W 8 mph
precip
8%
09.19
sat
DAY
90°F
NW 4 mph
precip
12%
NIGHT
80°F
SW 14 mph
precip
87%
09.20
sun
DAY
88°F
N 8 mph
precip
40%
NIGHT
88°F
NW 4 mph
precip
17%
09.21
mon
DAY
90°F
NE 7 mph
precip
4%
NIGHT
88°F
E 4 mph
precip
10%

Sanibel Island Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Sanibel Island was 31.2°F. The maximum and minimum values were 31.0°F and 31.7°F respectively.

Sanibel Island on the Weather Map

Best Time to Visit Sanibel Island
The most sunny months:
March 19 days
April 18 days
December 17 days
The most warm months:
July 92.6 °F
August 92.6 °F
June 91.2 °F
Warmest sea temperature:
August 91.9 °F
July 91.5 °F
September 90.3 °F
The most cold months:
January 71.3 °F
December 74.5 °F
February 75.1 °F
The most rainy months:
July 5 days
June 5 days
August 4 days
The most windy months:
October 10 mph
November 10 mph
January 10 mph
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